Blow mold for forming a refillable polyester container
AssigneeContinental PET Technologies, Inc.
InventorsSuppayan M. Krishnakumar, Wayne N. Collette, Thomas E. Nahill
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Abstract
This relates to a returnable/refillable container in the form of a blow molded polyester biaxially oriented bottle wherein the container includes a domed base construction wherein the wall thickness gradually and smoothly increases to a maximum at the center of the dome. This also relates to a specially configurated preform which is blow molded to form the container and a specially configurated blow mold cavity for receiving a preform having a lower axial projection in the form of an elongated gate without crushing.
Claims2
A blow mold for blow molding a heated preform to form a container having an internally domed base, said blow mold defining a cavity including a base forming portion, and said base forming portion having a central substantially hemispherical dome portion and, at the center of the dome portion, a gradually sloping inverted portion with a central substantially axial recess matching an intended shape of an original depending axial portion on an intended preform.
Dependencies are inferred from the claim text.